This is a work of fiction. It is meant to entertain, not instruct. It is not intended as a work of theology and, if it were, would fail utterly, as much of it would be really bad theology. Again: it is meant to entertain, not instruct.
I have chosen to base this off of several other works of fiction, largely because mixing the ideas from Mrs. Rowling with those from these other works is amusing. At times these choices constrain other choices I as an author might have otherwise made differently. Some of the theology here-in is really bad theology not because I could not imagine better, but because I sourced it in. I cannot fix everything without destroying the crossover feel that I am aiming for. In particular, much of the information in this section comes from, or rather is based on, Many Waters, although what I came up with dovetails nicely (or at least I think it does) with a concept I get from The Screwtape Letters concerning the morphology of angelic beings.
Recall that these appendices are written from the perspective of an in-world researcher. These in-world researchers are off stage both in the that they do not appear in the story itself, but also in the sense that they are not necessarily from the present as the characters in the story would perceive time. Not all of these researchers have written in the same style, nor have all aimed at, or achieved, any uniform level of professional scholarly writing. Most of these researchers are religious figures working for various in-world Vatican departments or commissions.
Footnotes are not part of the in-world document, despite any appearance to the contrary, and despite the fact that if this were a real document, it would have been written with real footnotes.
This Appendix is atypical in that it is written from the Author’s perspective, not from a researcher’s perspective.
| Average Power Level | US Males 1900 | US Males 2001 | US Male Nephilim 1900 |
|---|---|---|---|
| 0 | 51.5 | 77.8 | 51.5 |
| 1 | 51.5 | 77.8 | 57.50 |
| 2 | 51.5 | 77.8 | 64.71 |
| 3 | 51.5 | 77.8 | 73.37 |
| 4 | 51.5 | 77.8 | 83.77 |
| 5 | 51.5 | 77.8 | 96.25 |
| 6 | 51.5 | 77.8 | 111.24 |
| 7 | 51.5 | 77.8 | 129.25 |
| 8 | 51.5 | 77.8 | 150.86 |
| 9 | 51.5 | 77.8 | 176.82 |
| 10 | 51.5 | 77.8 | 207.99 |
| Average Power Level | US Females 1900 | US Females 2001 | US Female Nephilim 1900 |
|---|---|---|---|
| 0 | 58.3 | 82.8 | 58.3 |
| 1 | 58.3 | 82.8 | 63.39 |
| 2 | 58.3 | 82.8 | 69.65 |
| 3 | 58.3 | 82.8 | 77.32 |
| 4 | 58.3 | 82.8 | 86.75 |
| 5 | 58.3 | 82.8 | 98.31 |
| 6 | 58.3 | 82.8 | 112.51 |
| 7 | 58.3 | 82.8 | 129.94 |
| 8 | 58.3 | 82.8 | 151.33 |
| 9 | 58.3 | 82.8 | 177.60 |
| 10 | 58.3 | 82.8 | 209.83 |
The above table is in part based on Ms. Felicitie C. Bell, Mr. Michael L. Miller. “Life Tables for the United States Social Security Area 1900-2100” 2005-08. SSA Pub. No. 11-11536.
I’m using 1900’s US numbers essentially because 1) I do not have UK numbers 2) 1900’s numbers seams to me a reasonable average between the effects of the magic that nephil would use (cooling charms, preservation charms, medical charms and potions), versus their tendency to ignore non-magical advances in science after the statute of secrecy.
The extend to which magic extends the nephil’s life depends on the nephil’s average power level. For males, I settled on the formula
a = x-29.9+29.9e^0.183y
where a is their estimated average lifespan, x is the life expectancy for a non-magical person, e is Euler’s number, and y is the average of their nine power levels (excluding any zeros). For females, using the same variables, I settled on the formula
a = x-22.39+22.39e^0.205y
I chose the different formulas because while it does not fully remove the fact that women normally live longer than men, it does massively reduce the delta. I decided (while I have no proof of this) a large part of the difference between male and female humans has got to be either the effects of more guys involved in wars or disease (or both).
Looking at the above, Euphemia should have had a life expectancy of around 130 years and Fleamont of around 111 years, yet they had James at around 68 and died at around 87. The first says that magic is extending fertility as well as lifespan. The second says that these are average numbers, and that there are still magical diseases that can drastically shorten them (since we know they died of dragon pox).
The other interesting thing about this table is the implications of the magical world ignoring modern medical advances. You can see that the mundane world has already wiped out the difference in lifespan for first few power ranks, and in fact live longer than rank one, two, or three powered nephilim do supposing such nephilim remain in the magical world. This is something to keep in mind when the books describe so many characters as appearing old. People did age faster in earlier centuries, due to hardship, poor diet, disease, and a variety of other causes. While the magical world may have eliminated much of the mundane disease, the impression is that the other problems remain prevalent.
Hogwarts' quill of acceptance and book of admittance do not work precisely way the nephilim think they do, working far more nearly based on the actual rules than they do on averages. But if they did work on averages as believed by the nephilim, then it would be at about a minimum of 4 that a student would be accepted, with perhaps an occasional student who had an average of 3 allowed in. These students are just starting to reach the point in the curve where life expectancy is still noticeably different than what modern medicine has achieved without magic. Counteracting this, many of them will live significantly less healthy lifestyles based on antiquated information. Thus they will live the ranges shown, but will also age and show that age to reflect the wear their lifestyle has placed on their body.
This gives our central characters life expectancies as follows:
| Last Name | First Name | Average Power | Life Expectancy |
|---|---|---|---|
| Dumbledore | Albus | 8.22 | 155.85 |
| Riddle | Tom | 8.00 | 150.76 |
| Potter | Harry | 8.00 | 150.76 |
| Snape | Severus | 7.55 | 140.30 |
| Abbott | Hannah | 5.77 | 108.90 |
| Bones | Susan | 6.77 | 125.47 |
| Granger | Hermione | 6.22 | 115.84 |
| Weasley | Fred | 7.00 | 129.24 |
| Weasley | George | 7.00 | 129.24 |
| Weasley | Charlie | 7.00 | 129.24 |
| Weasley | Bill | 7.22 | 133.42 |
| Weasley | Ronald | 6.22 | 114.88 |
| Weasley | Percy | 6.11 | 112.79 |
| Weasley | Ginny | 7.55 | 140.91 |
| Weasley | Arthur | 7.33 | 135.81 |
| Weasley (Prewett) | Molly | 6.88 | 127.48 |
| Delacour | Fleur | 7.44 | 111.29* |
* Fleur is quarter-veela, see The Veela Curse.